Circuit-closer.



. P.sEoK,1m

` CIRCUIT CLOSER. APPLICATION FILED NOV. I5 1913. RENEWED JULY 7.1915.

1,149,787. l Patented Aug. 10, 1915.

Imam/Io@ I fedi Affini, Jr,"

UNITED sra'rns rafraiwr onirica i p vrant snBoK, Jn., or HEATHERMAN,vinsr vrnerivrn.

' crncUir-ctosnn.

Specification of Letters Patent. y`] 3,1jey`yteltiring. "g1/0, 1915.

Application led November 15, 1913, Serial No. 801,221; Renewed-.illy7'-, 1915. Serial No. 38,532.

To cz'ZZfwwm may 00m-em:

Be itknown that l, PAUL Snox, Jr., ay subject of the King ofHungary,residing at Heathermam ,in the county of Kanawha and State ofWest Virginia, .have invented certain new and useiul Improvements inCircuit-Closers, of which the following is a specification. j

This invention relatestof circuit closers especially ladaptedior usewith railway signaling systems. l The, object of theinvention is toprovide a Vcircuit closer designed to control visual Aand audiblesignals in railway signaling sysl tenis in a positive and certainmanner, and

in which the liability of derangementl of the. parts in use will bereduced to the minimum,y

while their etliciency-,will ,be4 raised to the f maximum.

The invention consists in the novel construction and arrangement ofparts hereinafter fully described. i v L vIn the accompanying drawings,forming `a part of this specication and in which like characters ofreference indicate correspondingparts: Figure 1 isganenlarged detailsectional View showing` the mechanism by which the signals are renderedoperative and inoperative by the passage of atrain overthe tracks. Fig.2 is an enlargedvdetail sectional view showing the position of the partsof the circuit closer when a signal is being transmitted. Fig. 3 is afragmentary detailview displaying the position of the trip mechanismrelative to the track.

The circuit breaker comprises a'boxing or casing 1 which is disposedbeneath the rails or the sleepers of a railway track, and, may.`

be constructed of any suitable material, such as cement, or of metal asmay bepreferr'ed. Arranged within the boxing is a solenoid magnet 2, thecore 3 of which has'connected with it one end of a yoke 4, the other endof which is pivotally-connected with a dog 5 pivoted at its lower end toa standard 6 secured on the base of the boxing, the upper end of the dogbeing provided with a head or catch 7 that is arranged to engage with alug 8 projecting from the lower portion of a push rod 9, the upper endof which projects upward through the top of the boxing and is providedwith a head 10 disposed approximately Hush with the upper face of thetread of a rail. This push rod is guided in its movements by an arm 11projecting from the inner wall of the boxing,

and carries arigid stop V12 that is designed The outer end of the'A lug8 is beveled as is also the opposing face 14k ofthe head 7, the objectbeing thatwhen downward pressure isV applied `to the push rod, therewill be a sliding actionl betweenthe lug and the beveled face of thehead to force the dog to 4one side without injury,

fwhich would otherwise occur it the parts were not so constructed.

.Rigidlysecuredto an insulated block 15 l mounted'on one'end of theboxing are two springarms 16 and 17, each of which is provided.. with acontact point 18, thearms 16 being at all times'in engagement with thepush rod, as clearly shown in Figs. r3-and L1,;,while the contacts 1Sare normally cutoff contactwith each other.. Arranged inthe end wall ofthe boxing adjacent to the block are two openings V19 through whichproject f ing a battery 23 and connect at their free the terminals oftwo conductors 20 and `21,

terminalswithan incandescent lamp '24 and with abell25, these two latterconstituting the audible and visual signals rreierred to.

In order tol hold the headof the dog-normally vin contact with'the lug,and with the f core of the solenoid extended, a'coiled spring 2G isprovided, one endv of which is secured to the .dog and the other end'toawall of the boxing.

Each of the circuit breakers is a counterpart of the other and comprisesa casing 27 arranged beneath the rail, and having therein a transversepartition 28 that serves as a guide or the lower end of a push rod 29,the upper portion of which projects through the top of the casing and isprovided with a head 30 similar to and positioned in the same manner asthe push rod` 10. The push rod 29 carries a rigid stop 31 against whichbears one end of a coiled spring 32 surrounding the push rod and bearingat its lower end upon the partition 28. One side wall of the casingcarries an insulated block 33 adjacent to which and passing through thewalls of the casing are two openings 34:, from which project theterminals of two conductors 35 and 36 that are secured to binding posts37. Between these binding posts and the block 33 are clamped orotherwise secured two resilient arms 38 and 39, the yformer of which isalways in contact with the push rod 29 and each rod carries at its freeend a contact point 40. As the construction of the circuit breaker C2 isthe same as that just described, the same reference characters areapplied thereto and will be readily understood. The free ends of theconductors 35 and 36 bridge the conductors 20 and 2l and the conductor35 is tapped into a conductor 41, while the conductor 36 is tapped intoa conductor 42. The conductors Ll1 and Ll2 are at one end in circuitwith the arms 38 and 39 of the circuit breaker ()2, while the otherterminals of these conductors connect with the solenoid magnet, theconductor 4:1 including a battery 43.

Having thus described the` parts of the apparatus, the mode of itsoperation will be given. Assuming a train to be traveling in thedirection indicated by the arrow in F ig. 1, the front pilot wheel lV ofthe engine will depress the push bar 30 at the entering Vend of theblock, but no result will ensue as to the operation of the signals, asthe contacts on the arms 16 and 17 of the circuit closer C3 are open. Assoon however, as the pilot wheel contacts with the push rod 10, thelatter will be depressed and bring the contacts 18 on the arms 16 and 17into engagement, as shown in Fig. 2, thereby closing the circuit 2O andcausing the signals to become operative. As the push rod 9 is depressed,it will force the dog backward so as to permit the lug 8 to pass underthe shoulder of the head 7 and thus hold the contacts 18 in engagement,so that the signals will remain operative until the other end of theblock is reached. As soon as the pilot wheel contacts with the push rodon the circuit breaker C2, the circuit will be closed to the solenoid,

thereby energizing its core, which will be retracted, and throw the dogout of cngagement with the lug 8, whereupon the spring 13 will cause thepush rod to resume its normal position. The reverse of this operationensues when a train moves in the opposite direction.

It will be seen from the foregoing description that although theimprovements herein defined are simple in character, they will bethoroughly eflicient for the purposes designed, and will co-act in theproduction or' a practical and positively operating signaling mechanism.

What I claim as new and desire to secure by Letters Patent is 1. Acircuit closer comprising a springpressed push rod provided with a stopto limit its upward movement, and a laterallyprojecting lug, a guide forsaid rod, a spring between said stop and guide, a pivoted dog arrangedto engage said lug, a magnet having its core connected to said dog, apair of insulated contact arms one of which is in the path of movementof said rod, and in engagement therewith, and an electric circuit inwhich said contact arms are connected.

2. A circuit closer comprising a springpressed push-rod provided with ahead at its upper end, a stop to limit the upward movement of the rod,and a laterally-projecting lug, a guide through which the rod extends, acoil spring around said rod between said stop and guide, a pivoted dogadapted to engage said lug, a solenoid having its core loosely-connectedto said dog, a pair of contact arms one of which is connected to saidrod, and an electric circuit to which said contact arms are connected.

In testimony whereof I aflix my signature in presence of two witnesses.

PAUL SEBOK, JR.

Witnesses Louis ELEKER, STEVE SEBOK.

G'opies of thu patent may ne obtained for ive cents each, by addressingthe Commissioner of latentll Washington, D. C.

